文献类型：期刊文献

中文题名：第1、2代马尾松人工林林下植被的多样性比较

英文题名：Diversity comparison of undergrowth vegetation in 1^(st) and 2^(nd) generations masson pine plantations

作者：何佩云[1,2] 丁贵杰[1] 谌红辉[3]

第一作者：何佩云

机构：[1]贵州大学造林生态研究所;[2]贵州师范大学生命科学学院;[3]中国林业科学研究院热带林业实验中心

年份：2012

卷号：32

期号：2

起止页码：70-74

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：国家"十一五"科技支撑课题"马尾松大径材与高产脂林培育关键技术研究与示范"(编号:2006BAD24B0301);国家科技成果转化课题"马尾松工业用材林良种选用及高产高效栽培技术中试与示范"(编号:2007GB2F200286);贵州省科学技术基金"1;2代马尾松人工林稳定性及地力维护研究"(黔科合J字[2009]2084号)

语种：中文

中文关键词：马尾松;连栽;林下植被;多样性指数

外文关键词：Pinus massoniana; successive rotation; undergrowth vegetation; diversity index

分类号：S718

摘要：通过配对样地法,以不同栽植代数(1、2代)、不同发育阶段(8、9、15、18、20a)的马尾松人工林为对象,对1、2代马尾松人工林林下植被多样性进行比较分析。结果表明:连栽后,1、2代林下灌木层植被物种丰富度在不同林龄阶段不同,在幼龄期和中龄前期2代较1代略高,中龄后期2代较1代低;同代林分物种丰富度变化存在一定差异,1代表现出随林龄增加而逐渐增加,而2代随林龄增加有所下降。草本层植被物种丰富度在幼龄期和中龄期,2代均高于1代;同代林分物种丰富度变化趋于一致:均表现出随林龄增加而逐渐增加的趋势,至中龄前期达到物种较丰富期,到中龄后期趋于下降。对多样性的影响,连栽后,灌木层和草本层辛普森多样性指数和香农-威纳指数2代均高于1代,且幼龄林灌木层中的香农-威纳指数在1、2代间的差异达显著水平。从结构上看,1、2代辛普森多样性指数和香农-威纳指数在幼龄林和中龄林,均表现出灌木层多样性指数高于草本层。
Through the pair plots method,with different generations （1 st and 2 nd ） and ages （8, 9,15,18,20 years） of masson pine plantations, the diversity comparison of undergrowth vegetation were conduced. The results are as follows： After successive planting, the abundance of the shrub layer were different as tree ages changed in the 1 st and 2 nd generation, the tree heights of the 2 nd generation were higher than the 1 st in young and earlier mid-age, that of the 2 nd generation were lower in later mid-age than the 1 st . There was a difference in the abundance of the shrub layer in the same generation, the abundance of the 1 st generation increased as the age of forest increased gradually, but the 2 nd generation dropped. The species abundance of the herb layer in the 2 nd generation was higher than that of the 1 st in young and mid-age, in the same generation;the species abundance change of the herb layer tended to be consistent,that is,displayed the tendency which increased along with the age of forest increased gradually, it reached the rich species at the earlier mid-age, and it tends the drop at later mid-age. The effects on plant species diversity after successive planting, the Simpson multiple and Shannon-Wiener index of the 2 nd generations were higher than that of the 1 st generation in the shrub and herb layer, all displayed the tendency which increased along with the age of forest increased gradually, and the difference of Shannon-Wiener index of the shrub layer in the young forest between the 1 st and 2 nd generation were up to significant level. Structurally speaking, the Simpson multiple and Shannon-Wiener index of the 1 st and 2 nd generation in the young and mid-age forest displayed that the shrub multiple level was higher than that of the herb layer.